Unit 2 Wildlife protection Discovering Useful Structures （ppt课件）高中-2024新人教版（2019）《高中英语》必修第二册.pptx

1、Discovering Useful Structures现在进行时现在进行时的被动语态的被动语态一、现在进行时的被动语态的构成be(am/is/are)being doneThe ship is being built this month.这个月人们正在建船。1.1.定义定义：_ _表示“某人/事此时此刻正在被”，主语是动作的承受者,表示说话时或现阶段某个被动的动作正在进行。It is reported that the water in the river is not being protected now.据报道，这条河里的水现在没有得到保护。Are the babies being

2、 taken care of by this nurse?这些婴儿正由这个护士照看吗？Who is being trained for the coming football match?为了即将举行的足球比赛，谁正接受训练？二、现在进行时的被动语态的结构2.结构结构 1）肯定形式：am/is/arebeing过去分词The house is being painted.2）否定形式:am/is/arenotbeing过去分词The trees are not being watered.3）疑问形式:Am/Is/Are主语being过去分词？Am I being watched over?4

3、）特殊疑问句的形式:把特殊疑问词放在一般疑问句前面。How many bridges are being built in the village?Where is a modern school being builtis being builtisnt being builtIs a modern school being builtThe workers are building the house.the workers.What are the workers doing？The house is being built by主语主语谓语谓语宾语宾语The workersare bu

4、ilding the house宾语宾语主语主语 谓语变被动谓语变被动 （时态不变）（时态不变）be+being+done+by3.主动语态变被动语态的原则主动语态变被动语态的原则“三变”例：They are building nine parks.原句主语变为by短语宾语变为主语 谓语由主动变为被动“三不变”原句意思不变 原句时态不变 原句主谓宾以外成分不变Nine parks _ by them.How many parks _?are being builtare being built三、现在进行时的被动语态的用法1表示此刻正被进行的动作，句中常用now，at the moment等时

5、间状语。Changjinhu is being shown in the cinema now.Lets go to see it.现在长津湖正在电影院放映呢，咱们去看吧。2表示现阶段正被进行的动作，但此动作在此时此刻不一定正在发生。Could I use your car please?Mine is being repaired by the workers.我能用你的车吗？我的车正在被工人们修着。3表示一种经常性的被动行为，常和always，constantly，frequently等表示频率的副词连用，这种用法常常带有说话者的赞扬或厌恶的感情色彩。I feel very puzzled

6、 that the goods in our shop are always being stolen.我感到很迷惑，我们商店的商品老是被偷。4表示按计划或安排主语将要承受谓语动词所表示的动作。A welcome party is being held tonight.今晚将要举行一场欢迎晚会。5与部分情态动词连用，表示对正在发生的动作的推测。He may be being scolded by his moher at the very moment.此刻他也许正被他妈妈责骂呢。is being discussedbeing praisedis being made13四、使用现在进行时的被

7、动语态应注意的问题1不可遗漏being现在进行时的被动语态中，be为第一助动词，being为第二助动词，缺一不可，且位置不可互换。此结构若缺少being，则就成为一般现在时的被动语态或系表结构。试比较：The report is being written by a famous professor.报告正在由一名著名的专家写着。The report is well written.这个报告写得很好。(系表结构)2不可遗漏介词take care of，look after，talk about，think of等动词短语用于现在进行时的被动语态时，其中的介词不可省略。Look！The chil

8、dren are being taken care of by their grandmother.瞧！那些孩子正由他们的奶奶照看着。3.没有进行时的被动语态一些表示状态、心理活动、拥有、存在等的动词(和主动语态一样)一般不用进行时被动语态,常用一般现在时被动语态表示此时此刻或目前主语承受谓语动词的动作。【练习】判断正误。小王,过来,有你的电话。Xiao Wang,come here.You arebeingwantedon the phone.Xiao Wang,come here.You arewanted on the phone.3“be(am/is/are)under/inn.”结构

9、有时可相当于现在进行时的被动语态。The bridge is in use.The bridge is being used.这座桥正在使用。be under protection (=be being protected)正在受到保护正在受到保护be under repair be under construction be under discussion be under research be under development be under considerationbe under debate be under observation be under investigati

10、on The problem is under discussion now.=The problem is being discussed now.The telephone is in use.=The telephone is being used.The city is under attack at the moment=The city is being attacked at the moment.用所给动词的适当形式填空用所给动词的适当形式填空1.History is _ by the people.(make)2.Some trees _ in the deserts now

11、.(plant)3.A new subway _(build)next summer.4.She _(take)to the hospital already.5.Thousands of satellites _(send)up into the space so far.6.Notes _(take)by the students at the moment.madeare being plantedwill be builthas been takenhave been sentare being takenPractice7.The grammar which _(learn)now

12、is easy to master.8.Some animals _(protect)well enough now.9.The sports meeting _(hold)in our school at present.10.My washing machine _(repair)this week,so I have to wash my clothes by hand.11.Look!The boy _(criticize)by the teacher in the office.is being learnedare being protectedis being heldis be

13、ing repairedis being criticizedPresent Continuous Passive voiCePresent Continuous Passive voiCeare being caughtare being soldare being killedis being destroyedare being coveredis being pollutedSimple（一般）Continuous（进行）Present（现在）do/doesTenseis/am/are doingPerfect（完成）Perfect continuous（完成）Past（过去）Future（过去）The past future（过去将来）have/has done have/has been doingdidwas/were doinghad doneHad been doingwill/shall dowill/shall be doingwill/shall have donewill/shall have been doingshould/would doshould/would be doingshould/would have doneshould/would have been doingreview